More and more, students are expected to use the number line to determine which two tens/hundreds/thousands/ten thousands/hundred thousands a number is between before they round it! This center offers perfect practice! Students select X amount of cards to create a number. Then, they use the number line to round! This center has students rounding all the way up to the hundred thousands! You can decide how many cards students should select to make their number. For example, students can select 2, 3, or 4 digit numbers to round to the nearest ten, etc. This center is perfect for introducing students to rounding and developing their skills throughout the unit! At the end, there is a gameboard that has students round 6 digit numbers to various place values!